Add BIP44 derivation paths to Bitcoin Cash wallet restoration process (…

…cypherstack#330)

* add new derive path for bch

and make it the new default.  we currently use slip44 (coinType 145) as the default

* add default cases to DerivePathType switches now failing

* normalize DerivePathType errors

log failing derivePathType or type, as appropriate

* add default derive path case to paynym interface

* use slip44 in bch wallet

* linting

* WIP look up both bip44 and slip44 addresses

slip44 is used by default

* typo fix

* typo fix

thanks Julian

* remove print

* use slip44 addresses by default

* use AddressType unknown for bip44 derive path type

* use address type unknown in _getCurrentAddressForChain, too

* generate different keys for SLIP44 and BIP44 paths

* couple more slips

* return slip44 from addressType

* slip before bip

* revert slip44-bip44, bch's bip44->bch44

* set bch44 derive path to type unknown

do not comingle paths in later output selection by index

* handle bip44 and bch44 path addresses when handling outputs

* use bip44 by default

* typofix

* typo fix in the typo fix

yo dawg

* separate new derivation path functions into their own non-testnet block

* cleanup

* disable test

should re-enable if it can be fixed with the test mnemonic in hand

---------

Co-authored-by: julian <julian@cypherstack.com>

lib/services/coins/bitcoin/bitcoin_wallet.dart

@@ -106,7 +106,7 @@ bip32.BIP32 getBip32NodeFromRoot(
     case DerivePathType.bip84:
       return root.derivePath("m/84'/$coinType'/0'/$chain/$index");
     default:
-      throw Exception("DerivePathType must not be null.");
+      throw Exception("DerivePathType $derivePathType not supported");
   }
 }
 
@@ -436,7 +436,7 @@ class BitcoinWallet extends CoinServiceAPI
             addrType = isar_models.AddressType.p2wpkh;
             break;
           default:
-            throw Exception("No Path type $type exists");
+            throw Exception("DerivePathType $type not supported");
         }
 
         final address = isar_models.Address(
@@ -1560,6 +1560,8 @@ class BitcoinWallet extends CoinServiceAPI
         address = P2WPKH(network: _network, data: data).data.address!;
         addrType = isar_models.AddressType.p2wpkh;
         break;
+      default:
+        throw Exception("DerivePathType $derivePathType not supported");
     }
 
     // add generated address & info to derivations
@@ -1606,6 +1608,8 @@ class BitcoinWallet extends CoinServiceAPI
       case DerivePathType.bip84:
         type = isar_models.AddressType.p2wpkh;
         break;
+      default:
+        throw Exception("DerivePathType unsupported");
     }
     address = await db
         .getAddresses(walletId)
@@ -1633,6 +1637,8 @@ class BitcoinWallet extends CoinServiceAPI
       case DerivePathType.bip84:
         key = "${walletId}_${chainId}DerivationsP2WPKH";
         break;
+      default:
+        throw Exception("DerivePathType unsupported");
     }
     return key;
   }
@@ -2645,6 +2651,8 @@ class BitcoinWallet extends CoinServiceAPI
               case DerivePathType.bip84:
                 addressesP2WPKH.add(address);
                 break;
+              default:
+                throw Exception("DerivePathType unsupported");
             }
           }
         }